High-precision gluing machine for aspheric optical lens

Abstract

The utility model relates to the technical field of optical lens gluing machines, in particular to a high-precision gluing machine for aspheric optical lenses. The automatic feeding device comprises a gluing finished product tray channel, a lower lens tray feeding channel, an upper lens tray feeding channel and a gluing base moving channel, wherein a gluing base is movably arranged on the gluing base moving channel; a lower lens taking and placing and dispensing manipulator is movably arranged above the lower lens tray feeding channel and the gluing base moving channel; an upper lens taking and rubberizing mechanism is movably arranged above the upper lens tray feeding channel and the gluing base moving channel; a gluing flattening mechanism is movably arranged above the gluing base moving channel; the gluing base comprises a gluing self-centering three-jaw mechanism; according to the utility model, a lower lens is taken and glue is dispensed, an upper lens is taken and is downwards close to the lower lens, the lenses are centered through the gluing self-centering three-jaw mechanism, and finally the lenses are flattened through the gluing flattening mechanism, so that the effect of high concentricity precision can be realized.

Description

Technical Field

[0001] The utility model relates to the technical field of optical lens gluing machines, and particularly refers to a high-precision aspherical optical lens gluing machine. Background Art

[0002] For the existing high-precision aspherical optical lens gluing machine, the main function of lens gluing is to bond two (or multiple) lenses into a concentric circle assembly to eliminate the aberration of the optical system and achieve specific optical performance.

[0003] The gluing process of optical lenses refers to the process in which the optical surfaces of two or more lenses are bonded to each other under the action of optical glue through UV lamp curing to form a new lens. The existing centering methods for aspherical lenses are as follows:

[0004] 1. Visual image positioning, the disadvantage is the problems of visual image accuracy and multi-visual coordinate error. After gluing, the concentricity of two lenses is ≧0.003 mm;

[0005] 2. Fixture positioning method, the disadvantages are high fixture cost, high requirement for the outer circle accuracy of the lens, and difficulty in matching with the lens. After gluing, the concentricity of two lenses is >0.003 mm;

[0006] Nowadays, the requirements for gluing optical precision are getting higher and higher. For many high-precision imaging lenses, such as high-pixel mobile phone lenses, drone lenses, etc., it is required that the concentricity of two aspherical lenses after gluing should reach 0.001 mm or <0.001 mm, and the above two existing methods cannot meet this requirement.

[0007] Therefore, based on the above defects of the existing aspherical optical lens gluing machine, it is necessary to improve the existing aspherical optical lens gluing machine. Content of the Utility Model

[0008] The purpose of the utility model is to provide a high-precision aspherical optical lens gluing machine for the deficiencies of the existing technology. This high-precision aspherical optical lens gluing machine solves the defects existing in the existing gluing machine, such as low concentricity accuracy.

[0009] To achieve the above purpose, the utility model is realized through the following technical solutions.

[0010] The high-precision aspherical optical lens gluing machine includes a glued finished product tray channel, a lower lens tray feeding channel, an upper lens tray feeding channel, and a gluing base moving channel. A gluing base is movably arranged on the gluing base moving channel;

[0011] Above the lower lens tray feeding channel and the gluing base moving channel, a lower lens picking, placing and dispensing manipulator is movably arranged;

[0012] Above the feeding channel of the upper lens tray and the moving channel of the gluing base, there is an upper lens picking and kneading glue mechanism arranged movably.

[0013] Above the moving channel of the gluing base, there is a gluing and flattening mechanism arranged movably.

[0014] The gluing base includes a gluing self-centering three-jaw mechanism.

[0015] Further, above the gluing finished product tray channel and the moving channel of the gluing base, there is a finished product picking manipulator arranged movably.

[0016] Further, the gluing self-centering three-jaw mechanism includes a three-jaw chuck coaxiality jig, and below the three-jaw chuck coaxiality jig, there is a Z-axis pressure height closed-loop motor and a grating scale.

[0017] Further, above the gluing and flattening mechanism, there is a collimator.

[0018] Further, the gluing finished product tray channel, the lower lens tray feeding channel, the upper lens tray feeding channel, and the moving channel of the gluing base are arranged in parallel.

[0019] Further, the gluing base is equipped with a UV lamp.

[0020] The beneficial effects of the present utility model are as follows: The lower lens is picked up and glued by the lower lens picking and dispensing manipulator, the upper lens is picked up by the upper lens picking and kneading glue mechanism and the upper lens is moved downward close to the lower lens, the lens is centered by the gluing self-centering three-jaw mechanism, and finally flattened by the gluing and flattening mechanism, which can achieve the effect of high concentricity accuracy. Description of the Drawings

[0021] Figure 1 It is a three-dimensional structural schematic diagram of the present utility model.

[0022] Figure 2 It is a three-dimensional structural schematic diagram of another angle of the present utility model.

[0023] Figure 3 It is a structural schematic diagram of the gluing self-centering three-jaw mechanism of the present utility model.

[0024] Reference Numerals and Descriptions:

[0025] Gluing finished product bin 1, lower lens bin 2, upper lens bin 3, gluing finished product tray channel 4, lower lens tray feeding channel 5, upper lens tray feeding channel 6, moving channel of gluing base 7, lower lens picking and dispensing manipulator 8, upper lens picking and kneading glue mechanism 9, collimator 10, gluing and flattening mechanism 11, gluing self-centering three-jaw mechanism 12, Z-axis pressure height closed-loop motor 121, three-jaw chuck coaxiality jig 122, grating scale 123. Detailed implementation mode

[0026] The present utility model will be further described below in conjunction with the accompanying drawings.

[0027] See Figure 1 —— Figure 3 For the high-precision gluing machine of the aspherical optical lens of the present utility model, first, the lower lens is sent to the corresponding position through the lower lens bin 2 and the lower lens tray feeding channel 5, and then the lower lens is sent from the tray to the three-jaw chuck coaxiality jig 122 of the gluing self-centering three-jaw mechanism 12 through the lower lens picking and placing and dispensing manipulator 8 and the corresponding image alignment, and then the lower lens is dispensed with glue.

[0028] At the same time, the upper lens is also sent to the corresponding position through the upper lens bin 3 and the upper lens tray feeding channel 6, and then the upper lens picking and kneading mechanism 9 takes out the upper lens from the tray, and the visual image positions the upper lens on the lower lens located on the three-jaw chuck coaxiality jig 122. The voice coil motor for pressing and kneading the glue of the upper lens picking and kneading mechanism 9 makes the upper lens move downward, and at the same time, the stepping motor of the upper lens picking and kneading mechanism 9 rotates the upper lens. During this process, the glue on the upper surface of the lower lens is kneaded, that is, the glue is pressed down while being rotated, so as to make the glue more evenly fill the surfaces of the two glued lenses, making the optical imaging performance of the glued lens more ideal.

[0029] When the upper lens is sent to about 0.03 mm away from the bonding surface of the lower lens, the kneading of the glue is stopped. At this time, the lower lens and the upper lens do not have high-precision concentricity, and the gluing self-centering three-jaw mechanism 12 is required to perform coaxiality centering of the upper and lower lenses.

[0030] Then, through the gluing base moving channel 7, the lens that has been partially glued is transported under the gluing and flattening mechanism 11. There is a collimator 10 above the gluing and flattening mechanism 11, and the upper and lower pressing surfaces can be adjusted to be parallel through the collimator 10. Then, the coaxiality positioning of the glued lens is performed through the three-jaw chuck coaxiality jig 122 of the gluing self-centering three-jaw mechanism 12. The clamping and loosening of the three-jaw chuck coaxiality jig 122 are realized by the Z-axis height pressure closed-loop motor below. The three-jaw chuck coaxiality jig 122 includes a three-jaw mechanism and a high-precision self-centering coaxiality jig.

[0031] As shown in the figure, there is a Z-axis pressure height closed-loop motor 121 inside the three-jaw self-centering mechanism. The Z-axis pressure height closed-loop motor 121 is composed of a coil and a magnet. When the motor is powered on, the current cuts the magnetic induction line, causing the mover inside to move up and down.

[0032] When it is necessary to center the lens through the height mode, the Z-axis pressure height closed-loop motor 121 inside can be controlled by the PLC program to push the push rod to move linearly in the Z-axis direction. Then, there is a wedge-shaped chute mechanism on the push rod, which converts the Z-axis movement of the push rod into the circumferential radial clamping and loosening movement of the three-jaw mechanism and the high-precision self-centering coaxial fixture mounted on it. When the radial position of the three-jaw mechanism self-centering fixture can be accurately fed back by the high-precision grating scale 123 in the Z-axis direction, the three-jaw mechanism can be closed-loop controlled to reach the appropriate position, with an accuracy of up to 12um, to achieve the coaxial self-centering effect of two glued lenses.

[0033] When it is necessary to center the lens through the pressure mode, similarly, the coil current of the Z-axis pressure height closed-loop motor 121 inside can be controlled by the PLC to make the Z-axis pressure height closed-loop motor 121 output a constant thrust. Then, the thrust is transmitted through the wedge-shaped chute mechanism, so that the three-jaw mechanism presses the lens with a constant pressure, relying on the high-precision self-centering fixture to achieve the self-centering of the lens.

[0034] And when the self-centering is achieved through a constant pressure, it can be switched to the height mode to detect whether the high-precision self-centering fixture reaches the specified position through the reading head of the grating scale 123. If it is not pushed to the specified position, the pressure can be adjusted continuously to push it to the specified position.

[0035] When the high-precision self-centering fixture accurately positions the coaxiality of the glued lens, the glued flattening mechanism 11 above then flattens the glued lens, so that the optical imaging characteristics of the finally pressed and formed glued lens will be better.

[0036] After the coaxiality positioning and flattening by the glued flattening mechanism 11, finally, the glued lens can be cured by the UV lamp under the glued base to form a finished product.

[0037] Finally, the glued lens finished product is clamped by the finished product clamping manipulator and placed on the finished product tray, and transported to the glued finished product bin 1 through the glued finished product tray channel 4 to complete the entire automatic lens gluing process.

[0038] Higher-precision coaxial gluing of optical lenses can be achieved. The actual use data can achieve a concentricity of less than 0.001mm for two lenses after gluing.

[0039] Action 1.1: The upper lens is fed from the upper lens bin 3 to the pick-and-place position of the upper lens tray feeding channel 6;

[0040] Action 1.2: The lower lens is fed from the lower lens bin 2 to the pick-and-place position of the lower lens tray feeding channel 5;

[0041] Action 2: The glued base moves from the origin to below the lower lens pick-and-place and dispensing manipulator 8;

[0042] Action 3: Place the lower lens on the gluing base and apply glue dots;

[0043] Action 4: Move the gluing base under the upper lens picking and kneading mechanism 9;

[0044] Action 5: Place the upper lens on the gluing base, knead the glue, and press down;

[0045] Action 6: Move the gluing base under the gluing and flattening mechanism 11;

[0046] Action 7: Self-align, glue, and flatten, and perform UV curing;

[0047] Action 8: Move the gluing base back under the lower lens picking, placing, and glue dotting manipulator 8;

[0048] Action 9: Pick the glued product from the gluing base and place it on the tray of the glued lens finished product discharging channel;

[0049] Action 10: Move the tray into the glued product bin 1 for discharging.

[0050] Certainly, the above-described embodiments are only preferred examples of the present invention and do not limit the scope of implementation of the present invention. Therefore, any equivalent changes or modifications made according to the structures, features, and principles described in the scope of the patent application of the present invention should be included within the scope of the patent application of the present invention.

Claims

1. Aspherical optical lens high-precision gluing machine, characterized by: It includes a gluing finished product tray channel, a lower lens tray feeding channel, an upper lens tray feeding channel, and a gluing base moving channel, and a gluing base is movably arranged on the gluing base moving channel; A lower lens taking and placing and glue dispensing robot is movably arranged above the lower lens material tray feeding channel and the gluing base moving channel; An upper lens taking and gluing mechanism is movably arranged above the upper lens material tray feeding channel and the gluing base moving channel; A gluing flattening mechanism is movably arranged above the moving channel of the gluing base; The glued base includes a glued self-centering three-jaw mechanism.

2. The high-precision gluing machine for aspherical optical lenses according to claim 1, characterized in that: A finished product clamping manipulator is movably arranged above the gluing finished product material tray channel and the gluing base moving channel.

3. The high-precision gluing machine for aspherical optical lenses according to claim 1, characterized in that: The glued self-centering three-jaw mechanism comprises a three-jaw chuck coaxiality fixture, and a Z-axis pressure height closed-loop motor and a grating ruler are arranged below the three-jaw chuck coaxiality fixture.

4. The high-precision gluing machine for aspherical optical lenses according to claim 3, characterized in that: A collimator is arranged above the gluing and flattening mechanism.

5. The high-precision gluing machine for aspherical optical lenses according to claim 1, characterized in that: The gluing finished product tray channel, the lower lens tray feeding channel, the upper lens tray feeding channel, and the gluing base moving channel are arranged in parallel.

6. The high-precision gluing machine for aspherical optical lenses according to claim 1, characterized in that: The glued base is equipped with a UV lamp.

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